συνεπιτείνω
From LSJ
English (LSJ)
A help to strain or intensify, αὐτῶν τὴν ὀργήν Plb.3.13.1; τὴν ψυχρότητα Plu.2.691c, etc.:—Pass., to be increased along with, τινι ib.1020c: abs., Herod.Med. ap. Aët.9.37. 2 intr., agree in intensity with, τινι Arist.Insomn.460b13, v.l.in Plu.2.451d.